Docker编译linux kernel

1.方式一：
# export PATH=$PATH:prebuilts/gcc/aarch64-linux-gnu/bin
# make ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- debug_defconfig
# make -j12

2.方式二：
# export PATH=$PATH:prebuilts/gcc/aarch64-linux-gnu/bin

# emacs Makefile

ARCH            ?= arm64
CROSS_COMPILE   ?= aarch64-linux-gnu-

# make debug_defconfig
# make -j12